Update 2011-03-31 from me:
Sorry I haven't posted anything on this subject in a while.
What I can report is that I continued using Soluto up until mid-December 2010, at which point my Toshiba Satellite A100 laptop died. It was quite a good laptop, with good keyboard ergonomics, and had an Intel Centrino Duo CPU, WinXP and 3GB of RAM. It actually had been on the blink for a couple of months - the keyboard processor seemed to be intermittently failing - but I think I might have finished the whole thing off by accidentally shorting the battery terminals when I was checking them with a voltmeter.
Anyway, I managed to get hold of an HP ENVY 14-1112TX laptop at about 50% discount.
It has an Intel i7 CPU, Win7 (64-bit) and 4GB of RAM. This is a superb laptop - it would be a good games machine too as it has a very good/fast GPU (ATI Mobility Radeon HD 5650) and a beautifully clear display. (URU/Myst Online looks good on it.) The keyboard ergonomics and the narrower screen are different to my Toshiba and I have had to get used to them. It scores 5.9 on the "Windows Experience Index". Overall, this laptop comes highly recommended by me.
I decided to not
install Soluto initially, as I didn't want to put anything into the mix that might cloud my learning/understanding of the new laptop and new OS. I have now got a handle on things and I don't think Soluto would be of much benefit to me right now. The new laptop is blazingly fast on startup and very stable, so I run it either switched on, or in standby (in RAM) for many days at a time, with only the occasional reboot following an update or new program installation that might necessitate a reboot. Though there are a lot of small ancillary (mostly non-essential) processes running from startup - e.g., including HP 3D Drive Guard (an accelerometer), Hard Drive Sentinel, and some convenient utilities - I don't perceive any problems with boot-up times as I had done with my Toshiba. Incidentally, I used to keep the Toshiba on, or in standby most of the time too, with infrequent reboots.
Win7 lets you know when it has problematic processes - e.g., unresponsive or slow processes, or processes that won't unhook on shutdown. I might try Soluto on this new configuration some time later this year, purely out of interest. If I do, I will post the results here.